Fire-farve Sætningen

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Fire-farve Sætningen JB Oversigt Historie Kort og Grafer Bevis ide Kempekæder Beviserne Afladning Forbedringer og generaliseringer Andre overflader Referencer Historie 1852 Francis Guthrie formulerede problemet 1879 Alfred Bay Kempe publicerede et bevis 1890 Percy John Heawood fandt en fejl i beviset 1913 George David Birkhoff indførte reducerbarhed 1969 Heinrich Heesch indførte afladning 1976 Appel & Haken gav det første bevis 1996 Robertson et. al. gav et bedre bevis 2004 Gonthier: Formaliseret computer-checked bevis
Fire-farve Sætningen JB Oversigt Historie Kort og Grafer Bevis ide Kempekæder Beviserne Afladning Forbedringer og generaliseringer Andre overflader Referencer Papers Periode Antal -1900 6 1901-1910 3 1911-1920 3 1921-1930 23 1931-1940 46 1941-1950 11 1951-1960 7 1961-1970 22 1971-1980 83 1981-1990 82 1991-2000 129 2001- 83
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Fire-farve Sætningen

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